Phase-specific nitrogen and carbon isotopes reveal progressive marine oxygenation during the early Great Ordovician Biodiversification Event

Published: 25 December 2025| Version 1 | DOI: 10.17632/6z5s726nks.1
Contributors:
Hanli Huang, Hansheng Cao, Fajin Chen, Zaiyun Wang, Fengxia Zhou, Qiuping Chen, Yuda Zeng, Chunqing Chen

Description

This dataset compiles high-resolution chemos tratigraphic records from the Early Ordovician interval of LCD1 drill core on the North Chian Block. It includes carbonate content, total organic carbontal nitrogen, carbon and oxygen isotopes, bulk-rock nitrogen isotopes, and silicatebound nitrogen abundance and isotopic composition,complemented by biogenic silica and Al-normalized trace-elementratios(Cu/Al, Ba/Al, Ni/Al) as nutrient/productivity=related proxies.

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Institutions

  • Guangdong Ocean University

Categories

Carbon Cycle, Nitrogen Isotope

Funders

  • Guangdong Natural Science Foundation of China
    Grant ID: 2025A1515012009;2022A1515012100
  • Zhanjiang Municipal Science and Technology Special Project
    Grant ID: 2024B01069

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